Perioperative medicine & outcomes

Efficacy and Safety of Preemptive Magnesium Sulfate Infusion during Pheochromocytoma and Paraganglioma Resection: A Randomized, Double-blind, Placebo-controlled Trial

AnesthesiologyPublished Randomised controlled trial

Authors' conclusion

Preemptive magnesium sulfate infusion effectively reduced intraoperative hemodynamic instability in patients undergoing PPGL resection.

Study context

Population
Patients scheduled for pheochromocytoma and paraganglioma (PPGL) resection88 in modified ITT analysis
Participants
92 patients
Comparison
Magnesium sulfate vs Placebo
Primary endpoint
Intraoperative hemodynamic instability: cumulative time outside BP and heart rate targets (SBP >160 mmHg, MAP <60 mmHg, heart rate >100 beats/min), as % of total anesthesia duration
Methodological detailssingle-centre, double-blind, placebo-controlled
  • Single-centre
  • Double-blind
  • Placebo-controlled

Primary result

As reported in the abstract

P = 0.003

Further findings

Intraoperative maximum SBP

P < 0.001

Patients requiring phentolamine

P = 0.011

Phentolamine dose

P = 0.011

OutcomeMagnesium sulfatePlacebo
Peak magnesium concentration (on completion of loading dose)1.82 (IQR 1.47–2.14) mmol l −1— not stated in the abstract

— not stated in the abstract

Safety

Safety outcomes

No significant differences between groups

Original publication

Efficacy and Safety of Preemptive Magnesium Sulfate Infusion during Pheochromocytoma and Paraganglioma Resection: A Randomized, Double-blind, Placebo-controlled Trial. Anesthesiology. Published 3 October 2025. doi:10.1097/aln.0000000000005778

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